Heater



March 8, 1932. Y r. RAY ET AL 1,848,197

HEATER Original Filed Jan. 18, 1928 3 Sheets-Sheet 1 E (fig.

i Qifivenfi s W55 5, Jasfiaa 77. Ray

7720mm Fay March 8, 1932. T. RAY ET AL 1,848,197

HEATER Original Filed Jan. 18, 1928 3 Sheets-Sheet 2 Q77ve77 Z0715 Joshua, R Pay Tfiqmas Fay March 8, 1932., 1 RAY ET AL 1,848,197

HEATER Original Filed Jan. 18, 1928 3 Sheets-Shoat 3 Patented Mar; 8 1932 unrrEn sTAT s crnoivms my AND JOSHUA R. RAY, or mnmsrnn, MICHIGAN- HEATER Originalapplieatien filed JanuarylIS, 1928, Serial No. 247,542.. Divided andthis application filed June 28,

1929. Serial 1110; 374,552.

" Our invention relates to heaters and has to do more particularly with'suchdevices as are especially adapted to be used in conjunction with liquid evaporating and concentrating systems and apparatus. V

A particular object of'our invention is to.

provide a heater of the type referre'dto' which will be simple in construction, inexpensive tomanufacture eflicient and economical inoperation, and durable. 7 'ect's I and advantages of "-Various other ob the construct-ion herein shownand' described will be fobvio'us to those skilledin the art from the disclosure herein given.

To this end our invention consists in the novel construction, arrangement and combination of parts herein shown and described,

and more particularly pointed-out in the 7- .7 of Fig. 6; and

claims. a 7

Referring now to the drawings forming a. part of "(hlS'SPCifiCfltiOIl and representing certain preferred embodiments of our inven tion: I 1 Fig. 1 illustrates a vertical sectional View of a device embodying our invention, shown in conjunction arat'r; i 1. V

Fig. 2 is-asectional view taken substantially on the line 2-2 of Fig. l; i

F ig; 3 isfa sectional viewv taken substantially on the line of Fig. 1

Witha vapor and moisture sep- Fig. 4 is a plan viewof aseparator plate employedin the structure;

I '5 is avertical sectional View substantiallyfsmnlar ,to- Fig 1; and showing 1 another embodiment of our invention; 7

, Fig. 6 a sectional View taken substan tiallyon the linef6' 6'of EigJB; Fig: 7 is a; detailed fragm'entary sectional view 011m enlarged scale taken on'th e line terminates at its lower end in a substantialand form b'aflies' which direct the flow of tration. The pipe 10 is connected by means of an expansion joint to a downwardly converging frusto-conical funnel-likemember 17 .7 The funnel-like member 17 preferably 1y cylindrical portion'18 which forms a part of thejoint, 15. l The funnel-like member 17 has preferably formed onthe upper portion thereof a later- 'allyextending annularffiange 20 which serves to seat a cylindrical casing" 23 preferably formed of sheet metal, which casing i's'provided' at its lower and upper extremities with laterally extending annular flanges 25 and 26, respectively. The casing 23 is also proa5 vided with asteam inlet 27 adjacent the upper p'ortionthere'of, and outlet 28 adjacent. the lower portion thereof fornoncondensible gases-.Q f V I 'Arranged between the casing' 23, and the .1 funnel like member l-Tis a circular tube plate 30'which is apertured to receive outlet tubes 32 for carryingbff liquid of condensation. Atube plate 35 is also provided: at the upper portion'of 'thecasing 23 and disposed between the heater and a liquid andvapor separator 36, the plate 35 being seatedbetween the an nula1-"fiange26 of the heater and a similar flange 37 formed on the separator. Extending through the tube p1ates30 and 35 and rigidlyfsecured thereto is a plurality of tubes 40, these tubes extending longitudinally of the casing 23. Arranged within the casing 2 3 substantially" concentrically therewith, is a plurality of cylindrical sections 42, 42a,- 42b, 420,'these sections being separated from eachother bymeans of partition sheets 43, {13aand 436; r These sheets 43' are suitably apertured forthe passage of the tubes no heating medium. g V

The cylindrical sections 42,'etc.','- have secured thereto, diametrically opposed radial lugs 45 which are preferably formed integrally withthe cylindrical sectionsand are adaptedto-maintain these sections in spaced relation to the inner Wall of the casing 23. These lugs extend; longitudinally substantially the entire length of the cylindrical sec-v tion andserve also as baflles, as will be-de- 1109 the apertures 47 being disposed around sub stantially the-semicircumference of the cylindrical section. It will thus be seen that two semi-annular spaces 50 and 51 are pro-- vided around the cylindrical sections, these spaces being bounded bythe1ugs 45 formed 5 on the cylindrical sections 42, etc., the inner wall of the casing23, the outer wall of the cylindrical sections, the tube plate and the partition 43, or a pair of partitions, as the casemightbe. t v I I) The partition 43 arranged beneaththe uppermost cylindrical section 42, as best seen in Fig. 4 comprises a semi-circular portion which is substantially equal in diameter tothe inside diameter of the casing 23, the

opposite semi-circular :portion' 56 being smaller in. diameter so as to provide a semiannular space between this portion of the artition and the inner wall of the casing 23. hndial supporting lugs 57 areprovided on the semi-circular port-ion 56.

, The cylindrical section 42a disposed below the uppermost section42 is simllar thereto, except that it is arranged in reverse relation to the uppermost section with regard tothe :1- plurality of apertures 47 and the single aperture 48. The third cylindrical section42b is arranged again similarly to theupperm'ost one, while the lowermost cylindrical section 420 is arranged similarly to the section 420.

=5 1 Also', the partition 43a is oppositely arranged to the up rmost partition 43, as seen best in Fig. 4, while the lowermost partition 43b is again arranged similarly to the uppermost one 43. It will be obvious, of course, that any number of: partitions and cylindrical sections may be utilized and we are not to be limited to the. particular number, and ar-. rangement shown. a f i The manner of connecting the tubes 40 to the respective tube; plates is shown in detail in Fig.7, while only the upper tube plate 35 isshown, itwill be readily understood that thearrangement in securing the tubes to the lower ltube plate 30is substantially similar.

: It will be noted that apertures 60 are formed in the plate 35 which are substantially cylin--' drical-tor vacertain portion of their length and then expand to form a frusto-conical portion62r The frusto-conical portions of -3 the apertures are recessed as at 63 so as to seat the expanded terminal flanges65 of the tubes 40 substantially flush with the frustoconicalportion of the apertures in the tube plate. a

" V ,Inthe'arrangeinentshown inFig. 8, the

apertures provided for the tubes 40 in the tube plate 35 comprise a pair of joined frusto-conical portions 67 and 68 of different angles, the portion 68 being recessed as at 69 so as to seat the terminal flange of the tube, as in the embodiment of Fig. 7, so that this flange will be substantially flush with the wall of the aperture 68. The tubes are expanded and bent to conform with the frustoconicalv portions and are provided with a crimp or bead 70 just outside of the tube plate so as to provide a very secure seat for the tube. v

The separator shown at 36 in Fig. 1 will not be described in detail, inasmuch as it forms the subject-matter of our co-pending application, Serial N 0. 396,866, filed June 10, 1929. Y

. The operation of the device just described is substantially as follows: Steam is introduced into the heater through theconduit 27, passing into the semi-annular chamber 50, from which chamber being restricted by the lugs 45, it enters the apertures 47 in the cylin drical section 42, circulates'around the tubes 40 between the partition 43 and tube plate 35 and then passes out through the aperture 48 into the semi-annular space 51. The steam then passes down between the partition 48 and the wall of the casing 23 into the semiannular chamber below and then enters the plurality of'apertures 47, in the cylindrical section 42a, circulates around the tubes in this compartment and passes through the open ture 48 on the opposite side of the cylindrical section. lVit-houtgoing into further detail it willbe apparent that the steam circulates back and forth in a criss-cross manner around the tubes between the partition and finally leaves the heating member 22 through the outlet 28. While-this is taking place, liquid whichit is desired to heat or coi'icentrate is beingintr duced into the device through the tubular member 10 whence it is .forced up into the tubes 40. The liquid will preferably be under some pressure and will absorb considerable heatfrom the steam circulating around the tubes 40. Hence the liquid will tend to spurt outof the upper extremities of the tubes in the form of vapor with var ing, amounts of entrained liquid, which liquic will be sepa rated from the vaporin the separator 3 lVater free vapor is permitted to leave the separator through the outlet 7 0 while the separated liquid is conductedaway through the outlet71; I

Referringnow to the embodiment shown in Figs. 5 and 6, a conduit 75 is provided for conducting fluid to the heating device, indicated generally at 76. An outlet 78 communi cates with .the conduit 75 and is controlled by a valve? 9, the outlet and valve being provided to perform a function similar to the outlet 12 and valve 13. The conduit 75 maybe connected to the heater76 by meansof a suitable expansion joint 80. v

The heater 76 comprises a substantially'cylindrical casing 852 closed at its upper end by means of a tube plate 83 reenforced by means of an annular ring 85 which is L-shaped in cross-section. At its lower end the casing 82 is closed by means of a frusto-conical sheet 86 having a cylindrical flange 87 secured to the casing 82, and at its other end being secured to an annular member 89 forming a 7 part of the expansion joint 80.

Secured in the tube plate 83 is a plurality of tubes 90 which extend longitudinally of the: casing 82 and are secured at their opposite.

end in a tubeplate 92. This tube plate is secured to a funnel-like member 93 which comprises a cylindrical portion 94 having an inwardly extending annular flange 95, a frusto conical portion 96, and a cylindricalportion 97 having an-inwardly extending annular flange 98 abutting against the end of conduit (0. portion 97 connects by means of flange 98 with the tubular member 7 5 and that the portions 94 and 96 are spaced from the casing hood 107 which is supported on the tube plate I 83and has a cover 108 which is preferably 1 removable and forms a fluid-tight connection with the hood. An outlet member 110 serves to conduct vapor from the hood to a separator. condenser or other suitable apparatus. It will readily be understood, however, that a separator of the type shown at, 36 in Fig.

1 may be substituted for the hood 107.

It is believed that the operation ofthe device just describedwill be readily apparent to those skilled in the art.. Steam is introduced intotheheating device through the,

tube 105, from which it enters the shell 100 andpasses through the apertures 103 and then circulates around the tubes 90. Liquid to be heated or concentrated, is, at the same time, forced into the heating device through the conduit 7 5, being permitted to expand in the funnel-like member 93 and thence forced upwardly through the tubes 90. A further expansion may take place in'the hood 107 and the vapor is then forced out through the conduit 110.

This application constitutes a division of our co-pending. application, Serial No. 247,542, filed January 18,1928.

' Having thus described our invention, it is It will be seen that the cylindrical I obvious that variousimmaterial modifications maybe made inthe'same without departing from: the sp1r1t,ot our nvention; hence, we

do; not wish. to bexunderstood as limiting ourselves toithe exact form, construction, arrangement, and combination of parts herein shown and described or uses mentioned,

I'Vhat we claimias new anddesire to secure byLetters Patentis: i

7,1. In a device of the kind described, a

tubular casing, a plurality of tubes within saidcasing', tube, plates securing the ends of said tubes,a second tubular casing'surroundinghsaidgtubes and within saidfirst tubular casing, said-"second tubular casing, having-a plurality; of apertures therein, a member proa vidin'g a wall extendingbetween said casings and 'meansior conducting heating vapor to said first tubular casing and therefrom to said firstmentioned casing.

,2. In a device of the kind describech a tubular-casing, a plurality of tubes within said casing,-tube plates securingthe ends of said tubespa second tubular casing surroundingsaid v tubes and within said first tubular casing,- said second tubular. casing having a plurality of apertures therein, a transverse apertured partition WltlllIlSillCl casings so as to provide a plurality ofcompartments therein whereby vapor. introduced into said first.

casing may be inducedrtofiow back andforth through said compartments and over said tubesw q 3. In a device of the kind described, a tubular casing, a plurality of tubes withinsaid casing, tubeplates securing the ends of said tubes, a casing formed of a' plurality Qftubular sections. surroiihding said tubes and within F'said first tubular section, said tubular sections having a plurality of apertures therein for the passage of heating vapor, and means for directing heating vapor through said tubular sections consecutively.

4. In a device of the kind described, a tubular casing, a plurality of tubes within said casing, tube plates securing the ends of said tubes, a casing formed of a plurality of tubular sections surroundingsaid tubes and within said first tubular section, apertures in each section and partitions between adjacent sections so as to provide a plurality ofcompartments between said partitions whereby steam 8 introduced into said first casing will be in- 1 duced to flow back and forth through saidv compartments and over said tubes. f

5. In a device of the class'described, a'tubular casing, a plurality V of tubes extending longitudinally therein, andmeans for introducing steam into said casing including an annular member extending around the inside of said casing outside of said tubes in spaced relation to said casing having a wall extending between said member and casing, said wall being apertured to provide a communication with said casing.,

6. In a device of the kind described, 5 0E8- ing, a'plurality of tubular members pass through said casing, an annular purtition within said casing forming compartments 3 therein, one of which is arranged a'nnelarly of the other, a partition arranged transversely of said tubular members, said partition having apertures, and a partition extending lengthwise of the axis of saidelsingbetween said annularly arranged partition and said casinf. i

7. n aiderice of the kind described, outer tubular casing, a plurality of tubes within said casing, tube plates securing said tubes at the ends thereof, a casing formed of a plurality of tubular section's within-said outer tubular casing, partitions positioned between adjacent tubular sections, partition members joining said'inner sectiontothe outer casing, each partition being apertilred outside ofsaid inner casing on a side opposite similar apertures in adjacent partitions,- each of said inner tubular sections having apertures for the passage of heating vapor.

. 8. In a device of the class described, a tubular casing, a plurality of tubes extending longitudinally therein, and'means for intro ducing'steam into said casing includingnn annular member surroundingsaid tubes and I radially and transversely arranged walls ex tending between said casing and annular member, said annular member and transverse wall being apertured to allow the passage'of steam from the annular member into the casmg In witness whereof we hereunto subscribe our namesthis 29th day of May,- A. D. 1929.

THOMAS RAY JOSHUA R. RAY. 

